我对使用准备好的语句很陌生,想知道是否应该在每次调用后关闭 stmt_init() 还是可以保持打开状态?
$stmt = $mysqli->stmt_init();
if($stmt->prepare("SELECT player_draws, player_turn, player_passes, swapped FROM ".$prefix."_gameplayer WHERE fk_game_id = ? AND fk_player_id = ?")){
$stmt->bind_param('ii', $currgame, $playerid);
$stmt->execute();
$stmt->bind_result($udraws, $uturn, $upass, $uswaps);
$stmt->fetch();
echo $udraws.'-'.$uturn.'-'.$upass.'-'.$uswaps.'<br>';
// Close statement object
$stmt->close();
}
$stmt = $mysqli->stmt_init();
if($stmt->prepare("SELECT player_draws, player_turn, player_passes, swapped FROM ".$prefix."_gameplayer WHERE fk_game_id = ? AND fk_player_id != ?")){
$stmt->bind_param('ii', $currgame, $playerid);
$stmt->execute();
$stmt->bind_result($odraws, $oturn, $opass, $oswaps);
$stmt->fetch();
echo $odraws.'-'.$oturn.'-'.$opass.'-'.$oswaps.'<br>';
// Close statement object
$stmt->close();
}
考虑到调用,其中一个对数据库更好吗?
提前致谢!